Package: scotch
Version: 6.0.7-2
Followup-For: Bug #925823
gdb backtrace suggests the error occurs in l.229 order_io.c:
Program received signal SIGSEGV, Segmentation fault.
0x77f9c2f9 in _SCOTCHorderSaveMap (ordeptr=,
vlbltab=, stream=0x9260) at order_io.c:229
229order_io.c: No such file or directory.
(gdb) bt
#0 0x77f9c2f9 in _SCOTCHorderSaveMap (ordeptr=, vlbltab=, stream=0x9260) at order_io.c:229
#1 0x53e5 in main (argc=, argv=) at test_scotch_graph_order.c:143
order_io.c:229 says...
if (fprintf (stream, GNUMSTRING "\t" GNUMSTRING "\n",
from ...
vlbltax = (vlbltab != NULL) ? (vlbltab - ordeptr->baseval) : NULL;
for (vnodnum = ordeptr->baseval, o = 0; vnodnum < vnodnnd; vnodnum ++) {
if (fprintf (stream, GNUMSTRING "\t" GNUMSTRING "\n",
(Gnum) ((vlbltax != NULL) ? vlbltax[vnodnum] : vnodnum),
(Gnum) cblktax[vnodnum]) == EOF) {
errorPrint ("orderSaveMap: bad output (2)");
o = 1;
break;
}
}
stream is not zero...
(gdb) p stream
$1 = (FILE * const) 0x9260
vlbltax is zero...
(gdb) p vlbltax
$5 = (const Gnum * restrict) 0x0
but that is supposed to be guarded in the call with vlbltax != NULL.
Does it mean the use of the "vlbltax != NULL" pattern is now broken in
gcc9 ?
-- System Information:
Debian Release: bullseye/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.19.0-5-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_WARN, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8),
LANGUAGE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages scotch depends on:
ii libbz2-1.0 1.0.6-9.2
ii libc6 2.28-10
ii liblzma5 5.2.4-1
ii libopenmpi33.1.3-11
ii libscotch-6.0 6.0.7-2
ii zlib1g 1:1.2.11.dfsg-1+b1
scotch recommends no packages.
scotch suggests no packages.
-- no debconf information
